Aging of the myocardium.
D000368:Aged; D000375:Aging; D000818:Animals; D002301:Cardiac Glycosides / Q000378:metabolism; D006801:Humans; D009206:Myocardium / Q000201:enzymology / Q000378:metabolism* / Q000473:pathology; D010101:Oxygen Consumption; D010859:Pigmentation Disorders / Q000209:etiology; D011506:Proteins / Q000378:metabolism; D051381:Rats; D014882:Water-Electrolyte Balance
D002301:Cardiac Glycosides; D011506:Proteins